A key witness in the Jodi Arias case called Phoenix Police Wednesday morning to report her home was broken into and burglarized. We're told key information in the case may have been stolen.

Dr. Janeen Demarte is an expert witness for the prosecution. Sources tell us her laptop was stolen. In that laptop was a psychological profile of Jodi Arias.Exclusive video shows of Dr. Demarte outside of her home, talking to investigators. Demarte is a clinical psychologist who evaluated Jodi Arias. She is scheduled to be a key rebuttal witness for the prosecution in the case.

"She's a critical witness for the prosecution," says Brian Foster, attorney and senior partner for Snell & Wilmer. He is not connected to the case.

"They wouldn't be listing this person as a key expert witness if they were going to come in and help the prosecution's case and say that everything the defense witnesses said is completely wrong."

Brian Foster has been following the Arias trial closely. We asked him, could this burglary hurt the case?

"It could be really a big deal but only time will tell. If the information gets out there in the public domain, or gets in the hands of the defense attorneys earlier… it could really undermine the prosecution's case."

Demarte hasn't been called to testify just yet. She's expected to do so after the defense rests. At Demarte's house, we saw three patrol cars and a couple of detectives on scene, along with a crime scene van. It's an unusual response for a normal home burglary.

Right now detectives are trying to figure out if this was a random burglary or if this had anything to do with the Arias case.

"It seems very suspicious. It could just a normal home burglary but this Dr. Demarte has been listed as an expert witness in publicly filed documents for over two years now, so who knows?"

No comment from prosecutors or defense attorneys about the burglary. We'll continue to follow this story and keep you updated.